Today's demands for measuring childhood success have chased household chores from the to-do lists of many young people. In a survey of 1,001 US adults released by Braun Research, 82% reported having regular chores growing up, but only 28% said that they require their own children to do them. “Parents today want their kids spending time on things that can bring them success, but ironically, we've stopped doing one thing that's actually been a proven predictor of success—and that's household chores.” says Richard Rende, a developmental psychologist.

    Giving children household chores at an early age helps to build a lasting sense of mastery, responsibility and independence, according to research by Marty Rossmann, professor at the University of Minnesota. In 2002, Dr. Rossman analyzed data from a longitudinal(纵向的) study that followed 84 children across four periods. She found that young adults who began chores at ages 3 and 4 were more likely to have good relationships with family and friends and to achieve academic and early career success, as compared with those who didn't have chores or who started them as teens.

    Chores also teach children how to be empathetic(感同身受的) and responsive to others' needs, notes psychologist Richard Weissbourd. In research, his team surveyed 10,000 high-school students and asked them to rank what they treasured more: achievement, happiness or caring for others. Almost 80% chose either achievement or happiness over caring for others. As he points out, however, research suggests that personal happiness comes most reliably not from high achievement but from strong relationships. “We're out of balance,” says Dr. Weissbourd. A good way to start re-adjusting priorities(优先事项), he suggests, is by learning to be kind and helpful at home.

    The next time that your child asks to skip chores to do homework, resist the urge to let him or her off the hook. Being slack(懈怠的) about chores when they compete with school sends your child the message that grades and achievement are more important than caring about others. What may seem like small messages in the moment but add up to big ones over time.

    Why do Americans struggle with watching their weight, while the French, who consume（消耗） rich food, continue to stay thin? Now a research by Cornell University suggests how life style and decisions about eating may affect weight. Researchers concluded that the French tend to（往往，倾向于） stop eating when they feel full. However, Americans tend to stop when their plate is empty or their favorite TV show is over.

    According to Dr. Joseph Mercola, a health expert, the French see eating as an important part of their life style. They enjoy food and therefore spend a fairly long time at the table, while Americans see eating as something to be squeezed（挤出） between the other daily activities. Mercola believes Americans lose the ability to sense when they are actually full. So they keep eating long after the French would have stopped. In addition, he points out that Americans drive to huge supermarkets to buy canned and frozen foods for the week. The French, instead, tend to shop daily, walking to small shops and farmers' markets where they have a choice of fresh fruits, vegetables, and eggs as well as high-quality meats for each meal.

    After a visit to the United States, Mireille Guiliano, author of French Women Don't Get Fat, decided to write about the importance of knowing when to stop rather than suggesting how to avoid food. Today she continues to stay slim and rarely goes to the gym.

    In spite of（尽管） all these differences, evidence shows that recent life style changes may be affecting French eating habits. Today the rate of obesity — or extreme overweight — among adults is only 6%. However, as American fast food gains acceptance and the young reject（拒绝） older traditions, the obesity rate among French children has reached 17% — and is growing.

    The Asian country announced yesterday that China was putting tariffs or taxes on about $3 billion worth of imports from the U.S. The tariffs are on 128 American-made products, ranging from pork and fruit to steel pipes. This will make it more expensive for America businesses to sell those products in China. And China says this was done as a response to the tariffs that the U.S. recently put on imports of Chinese steel and aluminum.

    Meanwhile, U.S. President Donald Trump says more tariffs, new ones worth as much a $50 billion are being planned by the U.S. on additional goods from China. So, one big question is, will all this cause a trade war, when countries take turns putting tariffs on each other 's goods, causing prices to rise?

    We don't know yet. The U.S. and China ship hundreds of billions of dollars of goods back and forth every year. So, the tariffs we've seen so far are a tiny part of that. And America's treasury secretary says the U.S. and China are talking behind the scenes about how to prevent a possible trade war.

    But a number of experts are concerned this could turn into one and so are some stock investors. The Chinese tariffs were a major factor in a drop of the U.S. stock market yesterday when the Dow Jones Industrial Average fell 459 points. But just like it's hard to tell if a trade war is on the horizon, it's also hard to tell what kind of effects one could have decades down the road.

    In an unmanned supermarket, a customer waits to pay. With the use of advanced digital payment technology, including biological recognition and in-depth learning, the man leaves in a minute. There's no cashier in the store. At a large university, students use a hand-scanning machine that authorizes their entry into the gym. Those people are using "smart machines" which identify people by their physical characteristics. These new devices use fingers, hands, faces, eyes and voices. Some machines may even use smells. This new technology, called biometrics, gets information from parts of the body.

    In the past, biometric machines were used mainly in government agencies or in prisons. But now that the cost of the technology is lower, these machines are starting to be used everywhere, from border services to schools.

    Some people, however, are concerned that these machines will mean the destruction of personal privacy. They worry that the machines will get personal information about them, know it seems like these machines are invading our privacy, but actually, biometric machines help to protect it," says Jay Tarkett, who works at a company that develops the machines, "They can be used instead of passwords on a computer, for example. They can also identify criminals at airports. So, really, they help to promote public safety, and all the information stored is kept confidential by the machine itself."

    Some people don't like the idea of using fingerprints because they associate them with criminals, and feel like they are being accused of something, In addition, they don't work for some people, such as bricklayers, who wear down their fingerprints. Yet, face recognition does work well because the subject doesn't really have to do anything, To cash a check at a bank, for example, the customer has to do nothing more than look at a machine similar to an automatic teller. If the face matches the picture kept on file, the customer gets the money with no problems, The need to carry identification with you from place to place, then, would all but cease. It has been found that the hand scan works well ill the college gym. Before this machine was used, students at the college entered the gym using cards similar to credit cards. The problem was that students often lost or forgot their cards. With the hand-scanning machine, however, the problem was solved right away.

    But the machines are still new, and there can be problems. For example, voice recognition works on the phone, but it is not precise, and can be tricked. Another constraint(限制)we notice；, with machines that use face recognition in particular, is that they can be fooled if people color their hair or gain a lot of weight. However, this particular problem may be solved by a new type of technology that scans a person's iris, the colored part of the eye. It can even identify the person from a few feet away, recognizing a customer as he or she approaches the ATM.

    On a hot summer weekend, Jorge Ayub saw the public beach north of Boston already crowded with nearly 1 million people drawn to the annual sand sculpture festival. Traffic on the nearby road was heavy, bands played music loudly, and later that night fireworks would light up the beach.

    And on the sand were four pairs of tiny shorebirds. These chicks(小鸟) were still too young to fly and a precious addition to the national endeavor to save a bird once down to 139 pairs in Massachusetts. It was Mr. Ayub's job. "Everyone made it," Ayub, a coastal ecologist reported at the end of the long weekend over the nests.

    Once common, piping plovers(笛鸻) were hunted and then squeezed out of their habitats(栖息地) by coastal development until, in 1986, the federal government listed the Atlantic Coastal birds as threatened. The bird's recovery has been halting. After three decades, the Atlantic population stands just under the 2,000-pair goal set by federal law.

    But the star has been Massachusetts, which has seen plovers increase to 687pairs from 139 pairs in 1986. One reason for that: "chick-sitting" in which conservationists sometimes spend all day watching over the birds.

    That progress has made Massachusetts the only East Coast state that decided to relax some Endangered Species Act restrictions: for example, to reduce the fenced-off areas and vehicle limits that have annoyed residents(居民).

    “Look at the stretch(一片土地), "Anyb says. "We had six nesting pairs between here and that bathhouse 600 yards away. By regulation, each nest should have 100 yards of fencing. We could have put up fencing and closed the beach all the way to the bathhouse."

    Instead, the plovers are surrounded in much smaller areas by "symbolic fencing". None of the 52 seawall entrances to the beach are closed. "If we put up too much fencing, people will be upset, and they are going to destroy it or walk right through the nesting areas," Ayub says. "By opening the beach, people are happier and the species does better."

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